#include <iostream>
using namespace std;
int main()
{int n,a[10000];
 while(cin>>n)
 { for(int i=1;i<=n;i++)
       cin>>a[i];
   if(n%2==0)  cout<<"No"<<endl;
   if(n%2!=0)  cout<<"Yes"<<endl;
 }
 
system("pause");
return 0;
}
